Abradant tube for perches



, 1937. J. P. LEINDORF ABRADANT TUBE FOR PERCHES April 13 Filed Dec. 16, 1935 JUJEPH P LE/NDORF IN V EN TOR.

ATTORNEY Patented Apr. 13, 1937 UNITED STATES PATENT OFFICE ABRADANT TUBE FOR PERCHE Joseph P. Leindorf,

Pelham Manor, N. Y.

Application December 16, 1935, Serial No. 54,550

2 Claims.

This invention relates to a paper tube havin an outer surface that is covered on two sides with an abradant, the said tubes being adapted to be mounted on canary cage perches.

5 An object of this invention is to slit the paper tube lengthwise so that it will be adapted to slip on and firmly grip perches of various sizes or design of cross-section, such as round, square or oblong, and to make the tube of paper having an element of resilience or springiness so that it may be opened to an increased diameter and still grip the perch.

Another object of this invention is to provide a modified tube which is slit lengthwise, is made 1 of paper having an element of resilience, is covered with an abradant and has a curved strip of absorbent paper secured to the outer surface of said tube diametrically opposite the slit portion and concealing a portion of the said abradant.

Another object of this invention is to provide binding strips for securing each end of the strip of absorbent paper to the paper tube.

With the above and other objects in view, the invention will be hereinafter more particularly described and the combination and arrangement of parts will be shown in the accompanying drawing and pointed out in the claims which form part of this specification.

Reference will now be had to the drawing,

3. wherein like numerals of reference designate corresponding parts throughout the several views, in which:

Figure l is a perspective view of the paper tube for canary cage perches having a portion of its 3.3 outer surface covered with an abradant and having a longitudinal smooth and uncovered portion.

Figure 2 is a cross-sectional view, the section being taken as on line 22 in Figure I.

Figure 3 is a perspective view of a modified pa- 40 per tube for canary cage perches having its entire outer surface covered with an abradant and with a portion of the abradant surface concealed by a curved strip of paper which is not covered with an abradant.

Figure 4 is a cross-sectional view, the section being taken as on line 4-4 in Figure 3.

Figure 5 is an end view of the curved strip.

Figure 6 is an end view of a modified tube having only its sides covered with an abradant material.

Figure 7 is an end view of a modified paper tube having concave sides covered with abradant material.

In the illustrated embodiment of the invention,

55 the numeral I2 indicates a perspective view of a tube for canary cage perches. made of paper which naturally has absorbent properties. The tube I2 has an outer surface that is partly covered with an abradant I3, such as sand held together by a binding material such as glue.

The top part Id of the paper tube I2 which is directly below the feet of the bird is smooth and without abradant material. Due to the absorbent character of paper of which the tube is made, it will function as a blotter and will absorb any pus from infected portions of the feet of the bird. The tube I2 is slit lengthwise, as shown by the numeral I9, so as to permit increasing or decreasing its diameter and so that it may be mounted on perches of various sizes.

In the embodiment shown in Figures 3 and 4, a paper tube I6 is shown, which is slit lengthwise at II so as to permit increasing or decreasing its diameter and so that it may be mounted on perches of various sizes. The outer surface of the tube I6 is covered with an abradant I8 such as sand held together by a binding material such as glue. Diametrically opposite the slit portion II, I have placed a curved strip of absorbent paper board I9 lengthwise of the exterior surface of the tube I6. The strip I9 is co-extensiv'e with the length of the paper tube I6. At each end of the tube I6, I have mounted a thin metal binding member 29 which circumscribes the tube I6 and the curved strip I9 and. is bent at H so as to engage both side edges of the slitted portion of the tube. Each member thus serves to fasten one end of the strip I9 on the tube IS. The strip I9 may thus be secured to the tube It as shown, or it may be glued thereto and conceal the upper portion of its abradant surface.

It is to be noted that the strip I9 forms a raised surface which functions similarly to an arch support used for ailing human feet.

It is also to be noted that the tube I6 is made of paper having an element of resilience or springiness so that it will close up when opened to an increased diameter, larger than its normal internal diameter.

Figure 6 shows an end view of a modified abradant tube for perches and comprises a tube 2I made of paper having an element of resilience and which is slit lengthwise at 22 so as to adapt it to frictionally grip a perch of larger diameter than its bore. The tube 2I has abrasive material glued to its outer surface but onlyat the sides 23. The lower portions on both sides of the slit 22 and the upper portion diametrically opposite the slit are without'any abrasive material.

The tube I2 is Figure 7 shows an end view of a modified abradant tube for perches and comprises a tube 25 made ofpaper having an element of resilience and which is split lengthwise at 26 so as to adapt 5 it to frictionally grip a perch of larger outer cross-section than its interior cross-section.

The tube 25 has abrasive material glued to its outer surface but only at the concave sides 21. The lower portions on both sides of the slit 26 10 and the upper portion are without any abrasive material. p

In my practice with the tube disclosed in my patent application No. 34,363, filed August 2, 1935, now Patent No. 2,045,395; issued June 23, 15 1936, I have found that when the tube is covered with sand at its upper surface that, when the canary hops down to the bottom of the cage, it dirties its feet with its own'excrement. It then hops back to the sanded tube and deposits the 20 excreta on top of the gravel on the tube. The wet excreta soften the glue and loosen the gravel from the tube.

This loose and dirty gravel then adheres and becomes imbedded in the crevices in the tarsus of the canarys feet and tends to cause infection of the feet. I have accordingly fou'ndit necese sary to improve the tubes by omitting gravel from H its top surface, as shown.

The healthy bird has the comfort of a sandles's top paper surface that will provide a smooth and Warm cushion-like effect.

I claim:

1. An abradant tube for canary cage perches, 10 comprising an elongated paper tube slit length- Wise, said tube being resilient and being adapted to frictionally grip atperch of larger diameter than its bore said tube having abrasive material glued to the two sides of its outer surface. 15

2. An abradant tube for canary cage perches, comprising an elongated paper tube slit length-l 'WiSE, said tube being resilient and being adapted to frictionally grip a perch of larger diameter than its bore, said tube having abrasive material 20 glued to its outer surface and having means for covering a portion of said abrasive.

JOSEPH P. LEINDORF. 

